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Nanosegregated surfaces as catalysts for fuel cells

United States Patent

January 18, 2011
View the Complete Patent at the US Patent & Trademark Office
Argonne National Laboratory - Visit the Technology Development and Commercialization Website
Nanosegregated Surfaces as Catalysts for Fuel Cells (IN-07-054)
A method of preparing a nanosegregated Pt alloy having enhanced catalytic properties. The method includes providing a sample of Pt and one or more of a transition metal in a substantially inert environment, and annealing the sample in such an environment for a period of time and at a temperature profile to form a nanosegregated Pt alloy having a Pt-skin on a surface. The resulting alloy is characterized by a plurality of compositionally oscillatory atomic layers resulting in an advantageous electronic structure with enhanced catalytic properties.
Stamenkovic; Vojislav (Naperville, IL), Markovic; Nenad M. (Hinsdale, IL)
UChicago Argonne, LLC (Chicago, IL)
12/ 338,736
December 18, 2008
STATEMENT OF GOVERNMENT INTEREST The United States Government claims certain rights in this invention pursuant to Contract No. W-31-109-ENG-38 between the United States: Government and the University of Chicago and/or pursuant to BE-AC02-06CH11357 between the United States Government and UChicago Argonne, LLC representing Argonne National Laboratory.